Calibration setup
FiberPatrol IDS Software Guide
Page 71
Calibration setup for Split configurations
For Split configurations, location 0 (the sensor start point) is at the terminated end of Sensor 1 (the
farthest point on Sensor 1 from the sensor unit). The sensor end point, location n (n = the total
optical length of the sensor cable) is at the terminated end of Sensor 2 (see
). Included in
the total length of the sensor is the amount of lead cable between the sensor unit equipment and
the protected fence.
Calibrating the Sensor Scales and Offsets
Adjust the Detection Settings (see
).
1.
Set the Sensor 1 Scale to -1, and set the Sensor 2 scale to 1.
2.
Set the Sensor 1 Offset and the Sensor 2 Offset to the Sensor 1 Set End value.
3.
Set the System End to (Sensor 1 Set End value) + (Sensor 2 Set End value).
4.
Save the configuration (Select the Configure menu > Save Configuration).
Verify the sensor start point
1.
Conduct a series of 3 tap tests to create 3 alarms at location 0. Location 0 is at the S1 end
module and represents the start point of detecting cable.
2.
Verify that the alarm results are not negative (must be a positive value).
Figure 76 Calibrated Sensor Parameters (from examples above)
Figure 77 Disturbance location calculation (Split configurations)
Figure 78 Tap test location - Set Start (Split configuration)
Set Start values for Sensors 1 & 2
Sensor 2 Offset
Set End values for Sensors 1 & 2
location 0
system length = 2a + b + c
location n
location of disturbance d1 (S1) = a + b - d1
location of disturbance d2 (S2) = 2a + b + d2
S1 end point
S2 start point
S2 end point
lead cable
S1 start point
service
loop (10 m)
S1 end module
tap cable near
location 0
